Where each fact begins
The source
shelf.
Product descriptions, certification records and research answer different questions. Here is what each source supports.
Checked September 26, 2026. Prices and listings can change.
Product page
CoreAge Rx — Strong Suit ↗
5 g creatine monohydrate, 30 servings, no other ingredients; starting $19/month. Final checkout terms not established.
Product page
Momentous — Creatine, 90 servings ↗
Current Signature Spec formula; unflavored 90-serving jar, $42.99 one-time and displayed introductory subscription amount $32.24. Future delivery discount differs.
Product page
Klean Athlete — Klean Creatine ↗
5 g monohydrate, approximately 60 servings, other ingredients none; $34.50 displayed.
Product page
Optimum Nutrition — Micronized Creatine Powder ↗
Selected US unflavored 60-serving variant: 5 g creatine monohydrate per serving and $20.49 before tax; other variants differ.
Certification record
NSF — Momentous unflavored creatine entry ↗
Includes 450 g powder and 5 g serving; does not establish our testing of a purchased jar.
Certification record
NSF — Momentous creatine lot listing ↗
Separate unflavored 450 g listing with specific lot identifiers. Match current product and lot, particularly after a sourcing change.
Certification record
NSF — Klean Creatine listing ↗
Unflavored 315 g powder, 5 g serving and listed lot numbers.
Certification record
Informed Choice — certified product index ↗
Index includes Optimum Nutrition Micronized Creatine Powder and distinct regional entries. Exact selected jar and batch match not completed.
Program explanation
NSF — the Certified for Sport mark ↗
Label, contaminant and banned-substance checks; certification is not a clinical outcome guarantee.
Evidence overview
NIH ODS — exercise and athletic performance ↗
Creatine and protein sections: different roles, exercise context, research protocols and safety boundaries.
Regulator
FDA — using dietary supplements ↗
Supplement regulation, label reading and discussing use with a healthcare professional.
Trial abstract
Fernandez-Garrido and colleagues — older-adult training trial, 2026 ↗
103 adults and 16-week training comparisons. Abstract reviewed; some authors disclose AlzChem support or consulting. No reviewed finished brand was compared.
Trial abstract
Chilibeck and colleagues — two-year postmenopausal trial, 2023 ↗
237 women; primary bone-density outcome not improved. Abstract obtained through Europe PMC after PubMed page challenge. Selected secondary results differ.
Trial abstract
Candow and colleagues — before-versus-after training trial, 2014 ↗
22 healthy older adults; 12 weeks; no between-group difference. Both groups received creatine. Abstract obtained through Europe PMC.
Manufacturer resource
Momentous — certificate lookup ↗
Lookup route is public; no certificate for a purchased lot was independently evaluated.